Lavinia Harcourt's life revolves around the clinking of gears and the hum of her inventions in a quiet workshop—until an enigmatic timepiece pulls her into a perilous journey across fractured realities. Inherited from her grandfather, a legendary Warden of the Timestream, the mysterious device grants Lavinia the power to interact with the very fabric of time itself. But such power comes with a price.

Pursued by the ruthless Magnus Veil and his shadowy agents, Lavinia must unravel the secrets of the Timestream to prevent history from unraveling into chaos. Alongside Amara Locksley, a hardened Timekeeper with her own haunted past, Lavinia discovers the legacy her family left behind—and the devastating mistakes that could doom them all.

As Lavinia learns to wield the shard's extraordinary power, she uncovers a web of betrayal, shifting alliances, and a battle for control over time itself. In a world where every decision creates ripples, Lavinia must face her fears, confront the past, and decide whether she is ready to take on the mantle of Warden.

Will she rise to protect the Timestream, or will the threads of destiny unravel forever?